Increasing Rate of Earthquakes Beginning in 2009

map of central US and bar graph

Detailed Description

Annual number of earthquakes with a magnitude of 3.0 or larger in the central and eastern United States, 1970–2016. The long-term rate of approximately 25 earthquakes per year increased sharply starting around 2009.

Details

Image Dimensions: 1077 x 788

Date Taken:

Location Taken: US